Siblings with similar sounding names?

[Rowellen]

I love all the names you have mentioned. I wouldn't have thought any were similar enough to Ethan to raise an eyebrow except maybe Ewan. My personal pick would be Reuben. I also like Ryan, Riley and Harry. FWIW, if DD had been a boy, we would have Hayden & Evan. Other suggestions
Rowan
Carter
Cooper
Cameron
Aaron
Eamon
Max

For girls names with A - I'm partial to Amelia or Amelie. I like Ava too.
Also:
Anna
Annika
Ayrlee
Arya
Abby
Amy

[~Kim~]

I am useless with name suggestions, but I have a Darcy and a Holly so I don't think any of your names sound samey-samey.